‘Now, Alix—’

‘No—no.’

She screamed, her hands held out impotently to ward him off.

‘Gerald—stop—I’ve got something to tell you, something to confess—’

He did stop.

‘To confess?’ he said curiously.

‘Yes, to confess.’ She had used the words at random, but she went on desperately, seeking to hold his arrested attention.

A look of contempt swept over his face.

‘A former lover, I suppose,’ he sneered.

‘No,’ said Alix. ‘Something else. You’d call it, I expect—yes, you’d call it a crime.’

And at once she saw that she had struck the right note. Again his attention was arrested, held. Seeing that, her nerve came back to her. She felt mistress of the situation once more.

‘You had better sit down again,’ she said quietly.

She herself crossed the room to her old chair and sat down. She even stooped and picked up her needlework. But behind her calmness she was thinking and inventing feverishly: for the story she invented must hold his interest until help arrived.

‘I told you,’ she said slowly, ‘that I had been a shorthand typist for fifteen years. That was not entirely true. There were two intervals. The first occurred when I was twenty-two. I came across a man, an elderly man with a little property. He fell in love with me and asked me to marry him. I accepted. We were married.’ She paused. ‘I induced him to insure his life in my favour.’

She saw a sudden keen interest spring up in her husband’s face, and went on with renewed assurance:

‘During the war I worked for a time in a hospital dispensary. There I had the handling of all kinds of rare drugs and poisons.’

She paused reflectively. He was keenly interested now, not a doubt of it. The murderer is bound to have an interest in murder. She had gambled on that, and succeeded. She stole a glance at the clock. It was five and twenty to nine.

‘There is one poison—it is a little white powder. A pinch of it means death. You know something about poisons perhaps?’

She put the question in some trepidation. If he did, she would have to be careful.

‘No,’ said Gerald: ‘I know very little about them.’

She drew a breath of relief.

‘You have heard of hyoscine, of course? This is a drug that acts much the same way, but is absolutely untraceable. Any doctor would give a certificate of heart failure. I stole a small quantity of this drug and kept it by me.’

She paused, marshalling her forces.

‘Go on,’ said Gerald.

‘No. I’m afraid. I can’t tell you. Another time.’

‘Now,’ he said impatiently. ‘I want to hear.’

‘We had been married a month. I was very good to my elderly husband, very kind and devoted. He spoke in praise of me to all the neighbours. Everyone knew what a devoted wife I was. I always made his coffee myself every evening. One evening, when we were alone together, I put a pinch of the deadly alkaloid in his cup—’